CN209753361U - Rotary grading sieve and sieving system - Google Patents

Abstract

The utility model provides a rotatory classifying screen and screening system, this rotatory classifying screen include the frame, install screen frame subassembly in the frame and with the driving motor that screen frame subassembly drive is connected, the screen frame subassembly includes that screen frame support and equipartition are in a plurality of sieves of the inboard of screen frame support, it is a plurality of the sieve centers on the center pin equipartition of screen frame support, it is adjacent form fan-shaped screening space between the sieve, driving motor's output shaft with center pin connection. The utility model realizes material separation through the rotation of the sieve plates, a plurality of sieve plates can sieve simultaneously, and the sieving efficiency and the sieving effect are ensured; vibration is not needed, the sieve plate is not easy to crack, and the service life is long; because vibration is not needed, the rotary grading sieve has the advantages of less power consumption, low energy consumption, low noise and less generated dust, and is environment-friendly and pollution-free while realizing grading and screening of materials; be provided with a plurality of screen frame subassemblies and can realize multistage screening, application scope is wide.

Description

Rotary grading sieve and sieving system

Technical Field

The utility model relates to a screening technical field especially relates to a rotatory classifying screen and screening system.

Background

In the process of industrial production, most enterprises adopt a vibrating screen, the vibrating screen has high vibration strength and high energy consumption, great noise and dust pollution are generated during vibration, and meanwhile, the vibration easily cracks welding seams of the vibrating screen to influence the screening quality.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to solve at least one of the above drawbacks and disadvantages, and this object is achieved by the following technical solution.

The utility model provides a rotary classification sieve, include the frame, install screen frame subassembly in the frame and with the driving motor that screen frame subassembly drive is connected, the screen frame subassembly includes that screen frame support and equipartition are in a plurality of sieves of the inboard of screen frame support, it is a plurality of the sieve centers on the center pin equipartition of screen frame support, it is adjacent form fan-shaped screening space between the sieve, driving motor's output shaft with center pin connection.

The utility model discloses a driving motor's rotation drives the center pin of screen frame support rotatory, and then drives the sieve rotatory around the center pin, utilizes the rotation of sieve to carry the material to the discharge end and accomplish the screening process from the pan feeding end. The material separation is realized through the rotation of the sieve plates, and a plurality of sieve plates can sieve simultaneously, so that the sieving efficiency and the sieving effect are ensured; vibration is not needed, the sieve plate is not easy to crack, and the service life is long; because vibration is not needed, the rotary grading sieve has low energy consumption, low noise and less generated dust, and is environment-friendly and pollution-free while realizing grading and screening of materials.

Further, the screen support comprises two wheel discs which are arranged oppositely, the central shaft penetrates through the centers of the two wheel discs to connect the two wheel discs into a whole, a bearing seat matched with the bearing is fixed on the rack, a through hole matched with the central shaft is formed in the bearing seat, and the screen support is fixed on two sides of the rack by the aid of the bearing in a sleeved mode between the through hole and the central shaft. The screen support is fixed on the frame through the bearing, so that the screen support is convenient to disassemble and replace and maintain; meanwhile, the screen body support and the screen plate are matched to form a plurality of fan-shaped screening spaces, the size of the rotary grading screen is reduced, the screening area is increased, and the screening efficiency is improved.

Furthermore, the sieve plate is fixed on the inner side surface of the wheel disc through angle steel, so that the sieve plate is convenient to disassemble and replace.

Further, it is adjacent contained angle between the sieve is the same, just the contained angle is acute angle or right angle, prevents that the contained angle is too big, and the material on the sieve is thrown away during the rotation.

Furthermore, a guard plate is arranged at a position, close to the feeding port, of one side of the screen body assembly, the guard plate is installed on the rack, and the shape of the arc-shaped portion of the guard plate is matched with that of the wheel disc. The guard plate is arranged, so that stable feeding can be guaranteed, and materials are prevented from leaking.

Furthermore, one edge of the outer side of the sieve plate, which is close to the guard plate, is provided with a flexible part. The flexible component is in contact fit with the guard plate, so that the materials can be guaranteed to fall into the sieve plate, and meanwhile, the flexible component can reduce rigid collision between the sieve plate and the guard plate, and the service life of the sieve plate is prolonged.

Further, at least one screen assembly is provided.

Furthermore, two screen body assemblies are arranged, each screen body assembly comprises a first screen body assembly and a second screen body assembly which are sequentially arranged along the movement direction of the material, the first screen body assembly and the second screen body assembly are both fixed on the rack, the installation height of the first screen body assembly is higher than that of the second screen body assembly, and the first screen body assembly and the second screen body assembly are connected through a transition screen plate; the sieve mesh size of the transition sieve plate is the same as that of the first sieve plate, and the sieve mesh size of the second sieve plate is the same as that of the first sieve plate or smaller than that of the first sieve plate.

Through setting up at least one screen frame subassembly, can realize single-stage screening and can realize multistage screening again, can guarantee the screening effect through screening many times.

Further, the driving motor is installed on the rack through a motor support, the motor support is fixed to the outer side of the rack, and the driving motor is fixed to the outer side of the screen support.

The utility model also provides a screening system including above-mentioned rotary classifying screen, this screening system is still including setting up the feeder of rotary classifying screen's top.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings.

Fig. 1 is a schematic structural view of a rotary classifying screen according to an embodiment of the present invention;

Fig. 2 is a side view (partially in section) of a rotary sizing screen provided in an embodiment of the present invention;

Fig. 3 is a top view of a rotary sizing screen provided in an embodiment of the present invention;

Fig. 4 is an enlarged schematic structural view of a driving motor of the rotary classifying screen according to the embodiment of the present invention;

The reference numbers in the figures are as follows:

1-frame 11-support beam

121-longitudinal beam 122-transverse beam

2-screen assembly 201-first screen assembly

202-second screen assembly 21-screen support

22-screen 23-flexible member

211-center shaft 212-wheel disk

221-first screening deck 222-second screening deck

223-third sieve plate 3-driving motor

41-bearing 42-bearing seat

5-angle steel 6-guard board

61-arc segment 62-horizontal segment

7-transition sieve plate 8-motor support

20-feeding belt 30-chute

301-inlet 302 of chute-outlet of chute

Detailed Description

exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Fig. 1 to 4 show schematic structural diagrams of a rotary classifying screen according to an embodiment of the present invention (in the drawings, a straight arrow is a material moving direction, and a curved arrow is a rotating direction). As shown in fig. 1 to 4, according to the utility model discloses a rotatory classifying screen that embodiment provided includes frame 1, install screen frame subassembly 2 in frame 1 and the driving motor 3 of being connected with the drive of screen frame subassembly 2, screen frame subassembly 2 includes screen frame support 21 and a plurality of sieve 22 of equipartition in the inboard of screen frame support 21, a plurality of sieve 22 center pin 211 equipartitions around screen frame support 21, form fan-shaped screening space between the adjacent sieve 22, driving motor 3's output shaft is connected with the center pin 211 of screen frame support 21, center pin 211 is the transmission shaft, driving motor 3 rotates and to drive the center pin 211 rotatory, and then it is rotatory around center pin 211 to drive sieve 22, carry the material from the pan feeding end to the discharge end and accomplish the screening process.

Frame 1 is the space frame structure, including vertical supporting beam 11 and horizontal beam, vertical supporting beam 11 and the mutual quadrature of horizontal beam form space frame, and the horizontal beam includes mutually perpendicular's longeron 121 and crossbeam 122, and longeron 121 and crossbeam 122 surround and form square frame, and the horizontal beam sets up at least two sets ofly along vertical direction, guarantees the outrigger. The screen body assemblies 2 are fixedly arranged on longitudinal beams 121 which are arranged in parallel relatively, and the number and the length of the longitudinal beams 121 are adjusted according to the screening stage number (the number of the screen body assemblies 2). The vertical supporting beams 11 and the horizontal beams are preferably made of channel steel. In addition, in order to further improve the supporting strength, reinforcing ribs can be arranged at the joints of the beams.

The screen frame support 21 includes center pin 211 and wears to establish two rim plates 212 that the both sides of center pin 211 set up relatively, and center pin 211 can pass the center of two rim plates 212 and link two rim plates 212 in an organic whole, and screen frame support 21 passes through bearing 41 to be fixed between two longerons 121 of the mutual parallel arrangement of frame 1, all be fixed with on two longerons 121 with bearing complex bearing frame 42, be equipped with on the bearing frame 42 with center pin 211 complex through-hole. During assembly, two ends of the central shaft 211 of the screen body support 21 connected to the whole body are inserted into the through holes of the bearing seat 42 to be placed, the bearing 41 is fixedly sleeved in the gap between the through holes and the central shaft 211, and the screen body support 21 is fixed on the frame 1. The bearing 41 is preferably an angular contact ball bearing. The axial dimension of screen frame support 21 and the width phase-match of frame 1 for screen frame support 21 can the joint between two longerons 121 that are parallel to each other. The screen frame 21 is detachably fixed on the frame 1 through a bearing 41, so that the replacement and maintenance are convenient.

The screen plate 22 is fixed between the two wheel discs 212 through angle steel 5, one side of the angle steel 5 is fixed with the side surface of the screen plate 22, and the other side perpendicular to one side of the angle steel 5 is fixed with the inner side surface of the wheel discs 212. In the preferred embodiment, one side of the angle steel 5 is welded and integrated with the sieve plate 22, the other side of the angle steel 5 is fixed on the wheel disc 212 through a bolt, the sieve plate 22 is detachably connected with the wheel disc 212, and the sieve plate 22 is convenient to replace. The length of the screen plate 22 is matched with the distance between the two wheel discs 212 (the width of the frame 1), and the length of the screen plate 22 is slightly smaller than the distance between the two wheel discs 212; the width of the screen deck 22 matches the radius of the wheel disc 212 to ensure that all material falls onto the screen deck 22 without leaking.

The included angle formed between adjacent sieve plates 22 is the same, and the included angle is a right angle or an acute angle, so that the phenomenon that the angle is too large and materials on the sieve plates 22 are thrown out during rotation is avoided. The sieve plate 22 and the wheel disc 212 are matched to form different fan-shaped sieve areas, and the different fan-shaped sieve areas can sieve materials at the same time, so that the sieving area is increased, and the sieving efficiency is improved; in addition, during rotation, the materials are screened by the first screen plate 221 of the fan-shaped screening area and then fall on the second screen plate 222 of the fan-shaped screening area to be screened, which is equivalent to secondary screening in the same fan-shaped screening area, so that the screening precision is improved, and the screening effect is ensured. The screen body component 2 is rotated and screened, and the qualified material is rotated to the discharge end for output after being screened by the screen plate 22. In addition, when the central shaft 211 rotates to drive the sieve plate 22 to rotate, the sieve surface of the sieve plate 22 can form different-angle inclination angles, so that material dust is prevented from flying, and the pollution to air is reduced.

Be equipped with the different sieve meshes in a plurality of apertures on sieve 22, the shape of sieve mesh is slot hole, square hole or round hole etc. the utility model discloses it is not specifically limited. For the equal size fractions of the coal, bar-shaped screen holes as shown in the figure are preferably used. Specifically, the sieve plate 22 includes a sieve plate frame and a plurality of mutually parallel sieve bars arranged on the sieve plate frame, and strip-shaped sieve holes or sieve slits are formed between adjacent sieve bars. The screen bars are preferably steel bars, in particular, several reinforcing ribs parallel to each other can be arranged in the direction perpendicular to the screen bars to improve the strength of the screen plate. In specific implementation, the sizes of the sieve holes are changed according to the requirements of the production process, different sieve plate widths are set according to the size of the processing amount, and correspondingly, the wheel discs 212 with different sizes are set to adapt to the sieve plate widths.

The position that one side of screen frame subassembly 2 is close to the pan feeding mouth is equipped with backplate 6, and backplate 6 is installed in frame 1, and the shape and the size of the segmental arc 61 of backplate 6 and the shape and the size phase-match of rim plate 212, convenient steady pan feeding to prevent that the material from leaking, guarantee that the material is whole to fall into sieve 22. The shield 6 also includes a horizontal section 62 for connection to the chute 30 so that material fed from below the chute 30 can pass smoothly along the arcuate section 61 into the screen deck 22.

The outside of sieve 22 is equipped with flexible part 23, and the cladding of flexible part 23 is on the one side with 6 contacts of backplate, when rotatory sieve 22 and the 6 cooperation pan feeding of backplate to the pan feeding end, flexible part 23 and the 6 contact cooperation of backplate can guarantee that the material is whole to fall into sieve 22, simultaneously, adopts flexible part 23 can reduce the rigidity collision of sieve 22 with backplate 6, guarantees sieve 22's life.

In the concrete implementation, can be according to actual need along the direction of motion parallel arrangement of material at least two screen frame subassemblies 2 in frame 1, the certain distance of interval between the adjacent screen frame subassembly 2 and connect through transition sieve 7, along the direction of motion of material, the mounting height of different screen frame subassemblies 2 reduces gradually, and the sieve mesh size of transition sieve 7 is the same with the sieve mesh size of sieve 22 of last one-level screen frame subassembly 2. And undersize conveying devices (not shown) are arranged below different screen body assemblies 2 and used for outputting undersize.

As shown in fig. 1 to 3, in the present embodiment, two screen assemblies 2, namely a first screen assembly 201 and a second screen assembly 202, are provided, the first screen assembly 201 and the second screen assembly 202 are both fixed on the frame 1 through bearings, the installation height of the first screen assembly 201 is higher than that of the second screen assembly 202, and the first screen assembly 201 and the second screen assembly 202 are connected through a transition screen plate 7.

In one embodiment, to improve the screening effect, for example, when the material to be screened is wet material, viscous material, or other materials stuck on the material, in order to ensure sufficient separation of the material, the transition screen plate 7 and the second screen assembly 202 may be added to the discharge end of the first screen assembly 201 along the moving direction of the material, and secondary screening may be performed. In this embodiment, the screen openings of the first screen assembly 201, the transition screen deck 7 and the second screen assembly 202 are all the same size.

In single-stage screening, because the centrifugal force of the rotatory production of screen frame subassembly 2 can drive the upset of material certain degree, prevent that the material from pasting and blocking the sieve mesh on sieve 22, can only be equipped with a screen frame subassembly 2 to set up transition sieve 7 alone at the discharge end department of first screen frame subassembly 201, need not to set up second screen frame subassembly 202, carry out screening once more to the material after first screen frame subassembly 201 filters, in order to guarantee the screening precision.

In another embodiment, according to the size fraction requirement of screening, a plurality of screen body assemblies 2 are arranged in parallel along the moving direction of the material to carry out multi-stage screening, so that the separation of materials with different specifications can be realized. Along the moving direction of the materials, the installation heights of different screen body assemblies 2 are gradually reduced, and the screen hole sizes of the screen plates 22 of different screen body assemblies 2 are also gradually reduced. In this embodiment, the screen deck 22 of the first screen assembly 201 has the same screen size as the screen size of the transition screen deck 7, and the screen deck 22 of the first screen assembly 201 has a screen size larger than the screen deck 22 of the second screen assembly 202.

the 7 slope settings of transition sieve, not only can carry out the screening pan feeding of next grade screening, can also carry out the secondary screening to the oversize thing that the last grade was sieved, guarantee the screening precision that the last grade was sieved. Transition sieve 7 is installed on the curb plate of frame 1 both sides, and the curb plate not only can be used for fixed transition sieve 7, can also seal the side of frame 1, reduces dust pollution.

Driving motor 3 passes through motor support 8 to be installed in frame 1, and motor support 8 is the triangle-shaped support, fixes in the outside of frame 1, and driving motor 3 places on motor support 8, and driving motor 3's output shaft is connected with the one end of center pin 211. The driving motor 3 is fixed on the outer side of the screen body support 21, so that the driving motor 3 is conveniently connected with the central shaft 211 of the screen body support 21. The rotational speed of the drive motor 3 can be achieved by adjusting the frequency conversion.

The utility model discloses a concrete working process as follows:

Start driving motor 3, driving motor 3 rotates and drives sieve subassembly 2 rotatory, sieve subassembly 2 clockwise rotation, the fan-shaped sieve subregion of formation between the adjacent sieve 22, first sieve 221 when the first sieve 221 of fan-shaped sieve subregion is rotatory to the below of longeron 121 and the position that the horizontal direction is certain acute angle, first sieve 221 and backplate 6 contact, the material is followed the pan feeding end and is gone into screening on falling into first sieve 221, first sieve 221 is along clockwise rotation with certain rotational speed always, when rotatory to the certain position of the top of longeron 121, the material of sieving through first sieve 221 falls into and carries out secondary screening on the second sieve 222 with fan-shaped sieve subregion, the material of rotatory second sieve 222 to the discharge end is followed the discharge end output, accomplish the screening. The other sector sifting areas simultaneously perform rotary sifting work in the same manner.

In the preferred embodiment, the screen plate 22 at the discharge end forms an angle of 30-40 ° with the horizontal direction, so that the screened material can smoothly fall into the transition screen plate 7.

When the sieve plate 22 rotates, the fan-shaped sieving area formed by the third sieve plate 223 which rotates to a certain angle below the longitudinal beam 121 faces downwards, so that materials cannot be received, sieving is not performed, the sieve plate 22 can be buffered to a certain extent, and damage to the sieve plate 22 is reduced.

the utility model also provides a screening system including above-mentioned rotary classifying screen, this screening system is still including setting up the feeder in rotary classifying screen top for the rotary classifying screen carries out the material and supplies with. The feeding device comprises a feeding belt 20 and a chute 30 which are arranged in sequence. The material enters the chute 30 from a feeding port 301 above the chute 30 through the feeding belt 20, and then enters the sieve plate 22 of the first sieve body assembly 201 through a discharging port 302 below the chute 30 for sieving, and the discharging port 302 is in smooth transition with the sieve plate 22 through the guard plate 6.

The utility model provides a rotatory classifying screen realizes material separation through the rotation of sieve, and a plurality of sieves can sieve simultaneously, guarantee screening efficiency and screening effect; vibration is not needed, the sieve plate is not easy to crack, and the service life is long; because vibration is not needed, the rotary grading sieve has the advantages of less power consumption, low energy consumption, low noise and less generated dust, is environment-friendly and pollution-free while realizing material grading and screening, and can be widely applied to various industrial productions such as coal mines, power plants, cement, metallurgy and the like; be provided with a plurality of screen frame subassemblies and can realize multistage screening, application scope is wide.

It is noted that, in the description of the present invention, the terms "first", "second", and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a rotary classification sieve, its characterized in that, includes the frame, installs screen frame subassembly in the frame and with the driving motor that screen frame subassembly drive is connected, screen frame subassembly includes screen frame support and equipartition is in a plurality of sieves of the inboard of screen frame support, it is a plurality of the sieve centers on the center pin equipartition of screen frame support, it is adjacent form fan-shaped screening space between the sieve, driving motor's output shaft with center pin connection.

2. The rotary classifying screen according to claim 1, wherein the screen support includes two wheel discs disposed oppositely, the central shaft passes through the centers of the two wheel discs to connect the two wheel discs together, a bearing seat matched with a bearing is fixed on the frame, a through hole matched with the central shaft is provided on the bearing seat, and the bearing is sleeved between the through hole and the central shaft to fix the screen support on both sides of the frame.

3. The rotary sizing screen according to claim 2 wherein the screening deck is secured to the inside surface of the wheel disc by angle iron.

4. The rotary classifying screen according to claim 1, wherein the included angles between adjacent screen plates are the same and are acute or right angles.

5. The rotary classifying screen according to claim 2, wherein a guard plate is provided at a position close to the feed inlet on one side of the screen body assembly, the guard plate is mounted on the frame, and the shape of the arc-shaped part of the guard plate matches with the shape of the wheel disc.

6. A rotary classifying screen according to claim 5, characterized in that the outside of the screening deck is provided with a flexible member near one edge of the apron.

7. The rotary sizing screen according to claim 1 wherein at least one said screen body assembly is provided.

8. The rotary classifying screen according to claim 7, wherein two screen assemblies are provided, the screen assemblies include a first screen assembly and a second screen assembly which are arranged in sequence along the moving direction of the material, the first screen assembly and the second screen assembly are both fixed on the frame, the installation height of the first screen assembly is higher than that of the second screen assembly, and the first screen assembly and the second screen assembly are connected through a transition screen plate; first screen frame subassembly is in including the equipartition first sieve and the second sieve of the inboard of screen frame support, the sieve mesh size of transition sieve with the sieve mesh size of first sieve is the same, the sieve mesh size of second sieve with the sieve mesh size of first sieve is the same or the sieve mesh size of second sieve is less than the sieve mesh size of first sieve.

9. The rotary sizing screen according to claim 1 wherein the drive motor is mounted on the frame by a motor bracket, the motor bracket being fixed to the outside of the frame, the drive motor being fixed to the outside of the screen body bracket.

10. A screening system comprising a rotary classifying screen according to any one of claims 1 to 9, further comprising a feeding device disposed above the rotary classifying screen.